1. Stem Cell Topic: Stem Cells: What Are They?
Stem Cells : What Are They?
types of stem cells exist in the human body. All have the capacity to replicate,
to self-renew; and they have the capacity to differentiate in order to produce
specific body parts such as muscle cells,
2. Stem Cell Topic: Human Embryonic Stem Cells
and valuable source of cells. Second, ES
cells appear genetically normal, both by a series of genetic tests and
functionally as shown by the creation of mice with genomes derived entirely
from ES cells. In mice these cells are developmentally
3. Stem Cell Topic: Moral Issues Surrounding the Sources of Stem Cells
the Sources of Stem Cells
At present, there are three possible sources of stem cells: adult stem
cells derived from pediatric or adult donors; embryo germ cell stem cells (EG
cells ) derived from aborted fetuses; and embryonic stem
4. Stem Cell Topic: Human Adult Stem Cells
of the body require
stem cells for normal turnover and repair.
Stem cells that are found in developed tissue, regardless of the age of
the organism at the time, are referred to as adult stem cells. The most well-known example of this are
5. Stem Cell Topic: Findings and Recommendations
animal studies that stem cells can be made to
differentiate into cells of choice, and that these cells will act properly in
their transplanted environment. In
human beings, transplants of hematopoietic stem cells (the cells which
6. Stem Cell Topic: The Moral Status of Human Stem Cells
status to it.
Since most cells in the human body possess a unique diploid genome and
are not regarded as morally protectable, the question of whether ES cells are
morally equivalent to somatic cells or whether they are more like human
7. Stem Cell Topic: Question: What is the Embryonic Status of Totipotent and Pl...
is it that pluripotent stem
cells are one step down the embryonic staircase? Totipotent
stem cells are capable of producing all tissue, including the trophoblast
necessary for implantation. Totipotent stem cells have the potential of
8. General Term: Stem Cells
Stem Cells Stem cells are
essentially undifferentiated cells. There
are many kinds of stem cells, some more differentiated than others.
When they divide, their progeny mature and specialize into a specific
type of cell (i.e.
9. Stem Cell Topic: Human Embryonic Germ Cells
Human Embryonic Germ Cells
Embryonic germ cells are
derived from primordial germline cells in early fetal tissue during a narrow
window of development. Unlike embryonic
stem cells , animal experiments on embryonic germ cells have been
10. Stem Cell Topic: Sources of Stem Cells and Guidelines for Use
Sources of Stem Cells and Guidelines for Use
Securingstem cells for research, whether from
children, adults, aborted fetuses, or embryos, must be done under conditions of
the most rigorous integrity for several reasons. These are to